{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/open-vswitch/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"id":"CVE-2026-68123"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Open vSwitch"],"_cs_severities":["medium"],"_cs_tags":["vulnerability","network-infrastructure","product-news"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eMicrosoft has disclosed a security vulnerability, tracked as CVE-2026-68123, affecting Open vSwitch. The flaw originates from an error in how the software handles Generic Segmentation Offload (GSO) userspace truncation. Specifically, improper handling of packet data can trigger an underflow condition during processing. This vulnerability is relevant to administrators managing network infrastructure running Open vSwitch on Linux environments. Defenders should prioritize patching affected instances to prevent potential service disruptions or memory-related exploitation resulting from malformed network traffic.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability could lead to memory corruption or service instability within the Open vSwitch daemon. The scope of impact is primarily limited to network infrastructure environments where Open vSwitch is utilized for virtual switching, potentially affecting traffic throughput and network availability if an underflow is triggered.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePatch Open vSwitch installations to the version addressing CVE-2026-68123 as recommended by the vendor.\u003c/li\u003e\n\u003cli\u003eReview network configurations to ensure that traffic traversing Open vSwitch switches is appropriately filtered or inspected by upstream firewalls.\u003c/li\u003e\n\u003cli\u003eMonitor system logs for repeated crashes or unexpected behavior of the Open vSwitch service (ovs-vswitchd).\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-08-11T10:04:11Z","date_published":"2026-08-11T10:04:11Z","id":"https://feed.craftedsignal.io/briefs/2026-08-openvswitch-gso-truncation/","summary":"CVE-2026-68123 is a vulnerability in Open vSwitch related to GSO userspace truncation that may cause an underflow condition during packet processing, potentially impacting memory or system stability.","title":"Open vSwitch GSO Userspace Truncation Underflow Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-08-openvswitch-gso-truncation/"}],"language":"en","title":"CraftedSignal Threat Feed - Open VSwitch","version":"https://jsonfeed.org/version/1.1"}